Marble Sort Level 77 Walkthrough & Solution

Level 77 Board Overview: The Cross and the Doubling Gates

Level 77 is built like a plus sign, and the arms of that plus are out to get you. Three Tunnels with a “3” counter sit along the top arm, a solid 2x3 block of Mystery Boxes fills the center, and the left and right wings dangle easy colors directly over x2 Multiplier Gates.

The wing colors look free: White, Purple, Green, and Pink on the left, Green, Pink, Blue, and Orange on the right. But anything you drop down a wing passes through a gate and lands on your Conveyor Belt doubled. Your starting Boxes want Cyan, Purple, Dark Red, and Pink — and there is no Orange Box anywhere near the board. One greedy pull on that right-wing Orange and your belt is buried under marbles you cannot spend.

The safe zone is the bottom of the cross. Right under the Mystery Boxes you can see Purple, Light Pink, and Dark Red blocks, plus a Cyan block just to the right of the core. Those four are your entire opening.

The Trap in Marble Sort Level 77

Every zone of this board has a job, and most of those jobs involve punishing you:

• The core: six Mystery Boxes in a 2x3 grid. They hide the colors your mid-game Boxes will demand, and you cannot plan around them until the front row clears and flips them over.
• The top arm: three Tunnels counting down from 3. They are sealed behind the core, so they are irrelevant until the middle is gone — forget they exist for now.
• The left wing: White, Purple, Green, Pink stacked over an x2 gate. Only touch these when a matching Box is open and the belt is nearly empty.
• The right wing: Green, Pink, Blue, Orange over another x2 gate. The Orange is pure bait — doubled Orange marbles with no Box will end the run by themselves.
• The bottom Boxes: Cyan, Purple, Dark Red, Pink up front. After those clear, expect a wave of Light Green and White demands.

The board is testing whether you can ignore two full wings of “easy” colors for several minutes. Play the center, and the wings become a harmless cleanup phase. Play the wings early, and you never see the Tunnels open.

Marble Sort Level 77 Step-by-Step Walkthrough

Opening: clear the exposed bottom of the cross

1. Tap the Purple block sitting directly under the Mystery Boxes. It feeds a waiting Purple Box.
2. Tap the Light Pink block next to it into the Pink Box.
3. Tap the Dark Red block into the Dark Red Box. Clearing this row also starts flipping the Mystery Boxes above it.
4. Tap the Cyan block to the right of the core into the far-left Cyan Box. The front line is done.

Mid-game: gut the Mystery Box core

5. Check every newly flipped Mystery Box against the new bottom Boxes — Light Green and White show up fast. Always pull from the center when a match exists.
6. Keep hollowing the 2x3 grid until it is completely empty. If a needed color is missing from the core, take it from the inner edge of a wing, not the outer edge.
7. Park no more than three homeless marbles on the Conveyor Belt. If you must pull a blocker to reach a match, pull it, park it, and stop.
8. When a Box finally demands a wing color, clear belt space first, then drop the wing block through the x2 gate. Doubled marbles are only safe when the belt has room for them.

Endgame: pop the Tunnels and sweep the wings

9. With the core empty, the three top Tunnels are exposed. Tap their front blocks — they drop Light Blue, Dark Red, and White.
10. Route each Tunnel drop straight into its Box as the counters tick down. Because the center is clear, everything lines up cleanly.
11. Finish the leftover wing blocks. The board is mostly empty now, so the x2 gates can no longer hurt you.
12. Before your last taps, confirm the final Box’s color — do not let a doubled stack of the wrong color steal the win at the finish line.

Level 77 Tips Recap

• The center-bottom row (Purple, Pink, Dark Red, Cyan) is the only correct opening — everything else is bait.
• An x2 gate is a tool, not a threat, but only when the belt is nearly empty and a matching Box is open.
• The Tunnels are the reward for patience: clear the core first and they practically finish the level for you.